Shackle safety device



FIG. 1 is an upper perspective view of a shackle safety device showing my new design.

FIG. 2 is a lower perspective view thereof;

FIG. 3 is a front view thereof

FIG. 4 is a rear view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is an opposite side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view of the shackle safety device shown in use for ease of disclosure.

The broken lines depict environment that forms no part of the claimed design. 

CLAIM The ornamental design for a shackle safety device, as shown and described. 